A Near-Infrared Diode Laser-Based Continuous Emissions Monitor for Nitrogen Oxides

EPA Contract Number: 68D50068
Title: A Near-Infrared Diode Laser-Based Continuous Emissions Monitor for Nitrogen Oxides
Investigators: Stanton, Alan C.
Small Business: Southwest Sciences Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1995 through March 1, 1996
Project Amount: $65,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1996) RFA Text |  Recipients Lists
Research Category: Ecological Indicators/Assessment/Restoration , SBIR - Monitoring , Small Business Innovation Research (SBIR)


This project addresses the development of diode-laser-based continuous-emissions monitors (CEMs) to meet the emissions monitoring requirements imposed on a wide range of industries by Federal and state clean air regulations. The overriding objective is the development of new, highly reliably instrumentation that has substantially lower long term operating and maintenance costs than existing instruments used in CEM applications. The instrument approach to be developed and tested in Phase I and Phase II will be readily extended to measurement of additional gases, such as carbon monoxide and methane. Detection limits for all gases will be 1 part per million or better in a measurement period of less than 30 seconds.

The Phase I/Phase II program will culminate in field testing of a prototype CEM. Key technical issues to be resolved during the program include:

  1. optimizing sensitivity for detection of NO using a near-infrared diode laser,
  2. deciding the feasibility of using a single diode laser to detect both NO2 and O2, and
  3. verifying the effectiveness of their proposed low-cost, fully automated, self-calibration method.

Supplemental Keywords:

small business, SBIR, air emissions, engineering, chemistry., RFA, Scientific Discipline, Air, Toxics, Ecosystem Protection/Environmental Exposure & Risk, air toxics, Environmental Chemistry, Chemistry, HAPS, Monitoring/Modeling, Analytical Chemistry, tropospheric ozone, Engineering, Chemistry, & Physics, Environmental Engineering, environmental monitoring, monitoring, Nitrogen Oxides, emission control strategies, continuous measurement, laser based emissions monitoring, air pollutants, emission control technologies, air pollution, compliance, near infrared laser, methane, air sampling, chemical detection techniques, carbon monoxide, continuous emissions monitoring, diode laser based monitoring, emissions contol engineering, air quality

Progress and Final Reports:

  • Final